clang-error: fix clang-diagnostic-defaulted-function-deleted error

The clang-diagnostic-defaulted-function-deleted error is generated when
explicitly defaulted move assignment operator is implicitly deleted.
This commit fixes those errors.

Change-Id: Id62b89eb3b58b819799194be91516f7c5e9cadc6
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
3 files changed